2014高考英语阅读理解巩固精品题练习(47)及答案
Scientists have long understood the key role that oceans play in regulating the Earth’s climate. Oceans cover 70 percent of the globe and store a thousand times more heat than the atmosphere does. What’s newer is the understanding of how this key component of our climate system responds to global warming.
A brake on global warming—for now
One of the ocean’s most important climate functions is absorbing heat and carbon dioxide (CO2), one of the gases that cause global warming. Acting as a heat sponge, the oceans have absorbed huge amounts of heat and CO2 in the last forty years.
Fujita explains that “the oceans are saving us from faster climate change—they are a big flywheel that delays rapid overheating of the earth, putting a brake on the climate system.”
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